package xjnu.edu.action;

import java.io.IOException;
import java.io.PrintWriter;

import javax.jms.Session;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import xjnu.edu.dao.UserDao;
import xjnu.edu.entity.User;

public class loginServlet extends HttpServlet {

	/**
	 * The doGet method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to get.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		doPost(request, response);
	}

	/**
	 * The doPost method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to post.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		response.setContentType("text/html");
		request.setCharacterEncoding("utf-8");
		String userName = request.getParameter("userName");
		String password = request.getParameter("password");
		UserDao userDao = new UserDao();
		User user = userDao.loginUser(userName,password);
		if (user!=null) {
			HttpSession session=request.getSession();
			session.setAttribute("userName", user.userName);
			RequestDispatcher dispatcher = request.getRequestDispatcher("mainFrame/mainframe.jsp");
			dispatcher.forward(request, response);
		}else {
			RequestDispatcher dispatcher = request.getRequestDispatcher("fail.jsp");
			dispatcher.forward(request, response);
		}
	}

}
